NULL pointer dereference on submitting form with empty select list
<form>
<select name="kill"><optgroup></optgroup></select>
<input type="submit">
</form>
CVE-2009-2679 (Unspecified vulnerability in bootpd in HP HP-UX B.11.11, B.11.23, and B.11.31 allows remote attackers to cause a denial of service via unknown attack vectors.)